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Re: [Qemu-devel] multiprocessor on kvm
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From: |
陳韋任 |
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Subject: |
Re: [Qemu-devel] multiprocessor on kvm |
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Date: |
Wed, 9 Nov 2011 10:50:41 +0800 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
> I am wondering when using -smp 16 and --enable-kvm at the same time
> (while the host has 4 cores), what will happen?
"-smp 16" will lauch 16 virtual cpu threads, and "--enable-kvm" means
you run those threads on physical cpus *at the same time*. How 16 virtual
cpu threads are scheduled on 4 physical cpus is done by host OS.
Regards,
chenwj
--
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667